llvm/test/tools/llvm-profgen/fs-discriminator.test

; RUN: llvm-profgen --format=text --unsymbolized-profile=%S/Inputs/fs-discriminator.raw.prof --binary=%S/Inputs/fs-discriminator.perfbin --output=%t1
; RUN: FileCheck %s --input-file %t1 --check-prefix=CHECK
; RUN: llvm-profgen --unsymbolized-profile=%S/Inputs/fs-discriminator.raw.prof --binary=%S/Inputs/fs-discriminator.perfbin --output=%t1
; RUN: llvm-profdata show --sample --show-sec-info-only %t1 | FileCheck %s --check-prefix=CHECK-SECTION

;CHECK-SECTION: ProfileSummarySection - Offset: [[#]], Size: [[#]], Flags: {fs-discriminator}

;CHECK: partition_pivot_last:88:1
;CHECK:  1: 4
;CHECK:  2: 4
;CHECK:  3: 4
;CHECK:  3.1: 4
;CHECK:  3.3: 4
;CHECK:  3.3072: 5
;CHECK:  3.7169: 4
;CHECK:  3.7171: 4
;CHECK:  4: 3
;CHECK:  4.3072: 6
;CHECK:  4.12800: 4
;CHECK:  4.3221238272: 2
;CHECK:  5: 2
;CHECK:  5.5120: 2
;CHECK:  6: 3
;CHECK:  7: 3
;CHECK:  5: swap:18
;CHECK:   1: 2
;CHECK:   1.1024: 2
;CHECK:   1.4096: 2
;CHECK:   2: 2
;CHECK:   2.9216: 2
;CHECK:   2.12288: 2
;CHECK:   3: 2
;CHECK:   3.512: 2
;CHECK:   3.3584: 2
;CHECK:  6: swap:12
;CHECK:   1.14336: 3
;CHECK:   2.7168: 3
;CHECK:   2.11776: 3
;CHECK:   3.13824: 3
;CHECK: partition_pivot_first:41:1
;CHECK:  0: 1
;CHECK:  1: 1
;CHECK:  2: 1
;CHECK:  3: 1
;CHECK:  3.1: 1
;CHECK:  3.11265: 7
;CHECK:  4: 7
;CHECK:  4.1: 4
;CHECK:  4.2: 2
;CHECK:  4.3: 4
;CHECK:  5: 1
;CHECK:  6: 1
;CHECK:  4.2: swap:6
;CHECK:   1.7168: 2
;CHECK:   2: 2
;CHECK:   3.4608: 2
;CHECK:  5: swap:4
;CHECK:   1: 1
;CHECK:   2.229376: 1
;CHECK:   2.589824: 1
;CHECK:   3: 1
;CHECK: main:24:0
;CHECK:  0: 0
;CHECK:  3: 0
;CHECK:  4.1: 1
;CHECK:  4.3: 1
;CHECK:  5.3: 4
;CHECK:  5.1537: 4
;CHECK:  6: 4
;CHECK:  6.1: 3
;CHECK:  6.3: 4
;CHECK:  7: 1
;CHECK:  8: 1 quick_sort:1
;CHECK:  9: 1
;CHECK:  11: 0
;CHECK:  14: 0
;CHECK: quick_sort:13:2
;CHECK:  0: 2
;CHECK:  1: 2
;CHECK:  1.15360: 2
;CHECK:  2: 2 partition_pivot_first:1 partition_pivot_last:1
;CHECK:  3: 1 quick_sort:1
;CHECK:  4: 2
;CHECK:  6: 2


; original code:
; clang -O3 -g -mllvm --enable-fs-discriminator -fdebug-info-for-profiling qsort.c -o a.out
#include <stdio.h>
#include <stdlib.h>

void swap(int *a, int *b) {
	int t = *a;
	*a = *b;
	*b = t;
}

int partition_pivot_last(int* array, int low, int high) {
	int pivot = array[high];
	int i = low - 1;
	for (int j = low; j < high; j++)
		if (array[j] < pivot)
			swap(&array[++i], &array[j]);
	swap(&array[i + 1], &array[high]);
	return (i + 1);
}

int partition_pivot_first(int* array, int low, int high) {
	int pivot = array[low];
	int i = low + 1;
	for (int j = low + 1; j <= high; j++)
		if (array[j] < pivot) { if (j != i) swap(&array[i], &array[j]); i++;}
	swap(&array[i - 1], &array[low]);
	return i - 1;
}

void quick_sort(int* array, int low, int high, int (*partition_func)(int *, int, int)) {
	if (low < high) {
		int pi = (*partition_func)(array, low, high);
		quick_sort(array, low, pi - 1, partition_func);
		quick_sort(array, pi + 1, high, partition_func);
	}
}

int main() {
	const int size = 200;
	int sum = 0;
	int *array = malloc(size * sizeof(int));
	for(int i = 0; i < 100 * 1000; i++) {
		for(int j = 0; j < size; j++)
			array[j] = j % 10 ? rand() % size: j;
		int (*fptr)(int *, int, int) = i % 3 ? partition_pivot_last : partition_pivot_first;
		quick_sort(array, 0, size - 1, fptr);
		sum += array[i % size];
	}
	printf("sum=%d\n", sum);

	return 0;
}